Aoyue 937+ Pro Series 45 Watt Programmable Digital Soldering Station-ESD Safe, C/F Switchable, Configurable Iron Holder, Spare Plug-in Heating Element Digital thermostat control with switchable C / F readout Programmable sleep Function to increase tip life 45 watt iron with over 50 available tip sizes 2 quick temperature programmable presets, Plug-in heater element